Replacing entire body using HTMX

The Problem:

Consider the following code. Here, clicking the bomb icon will replace the entire body with a new one, but the class of the body element remains the same. The goal is to update the class of the body element to ‘bomb-animation’ when the body is replaced.

<body id="bomb-main" class="main-page">
  <div class="bomb"
       hx-trigger="click"
       hx-swap="outerHTML"
       hx-target="#bomb-main"
       hx-get="/boom">🔫
  </div>
</body>

The request to /boom returns the following response:

<body id="bomb-main" class="bomb-animation">
  <h1>ka-boom</h1>
</body>

How can I ensure that the class of the body element is updated to ‘bomb-animation’ upon clicking the bomb icon?

The Solutions:

Solution 1: Use `hx-replace` instead of `hx-swap`

`hx-swap` replaces the contents of the target element with the response HTML, while `hx-replace` replaces the entire target element with the response HTML. In this case, we want to replace the entire `` element, so we should use `hx-replace` instead of `hx-swap`.

&lt;div class="bomb"
     hx-trigger="click"
     hx-replace="outerHTML"
     hx-target="#bomb-main"
     hx-get="/boom"&gt;&#128163;&lt;/div&gt;

This will correctly replace the entire `` element with the response HTML, including the `class` attribute.

Q&A

How to change the class of `<body>`?

—

htmx converts outerHTML to innerHTML swap value. Hence, it’s not possible to change class of the <body> element.

What is the issue?

—

htmx swaps outerHTML to innerHTML in the hx-swap method.

What does `htmx` documentation say about this?

—

Due to DOM limitations, it’s not possible to use outerHTML method on <body> element.

Video Explanation:

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Replacing entire body using HTMX – Htmx

The Problem:

The Solutions:

Solution 1: Use `hx-replace` instead of `hx-swap`

Q&A

How to change the class of `<body>`?

What is the issue?

What does `htmx` documentation say about this?

Video Explanation:

Similar Posts

Replacing entire body using HTMX – Htmx

The Problem:

The Solutions:

Solution 1: Use `hx-replace` instead of `hx-swap`

Q&A

How to change the class of <body>?

What is the issue?

What does htmx documentation say about this?

Video Explanation:

Similar Posts

How to change the class of `<body>`?

What does `htmx` documentation say about this?